PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/09-18:27:50
G08     268.8          19.9                9.7 +/-    2.62      21.4 +/-    2.62  0.040 / 0.050
G10     54.9           59.3               10.7 +/-    0.67      12.2 +/-    0.67  0.040 / 0.040
G11     313.2          15.8                8.8 +/-    1.45      21.5 +/-    1.45  0.170 / 0.260
G14     259.2          64.5               12.9 +/-    0.85      14.1 +/-    0.85  0.160 / 0.380
G20     91.7           39.0               11.6 +/-    1.32      17.1 +/-    1.32  0.120 / 0.250
G21     153.4          16.3               12.1 +/-    3.59      29.1 +/-    3.59  0.130 / 0.280
G27     237.0          19.0                9.6 +/-    2.30      21.7 +/-    2.30  0.150 / 0.370
G31     181.3          23.8               12.6 +/-    1.48      25.3 +/-    1.48  0.120 / 0.370
G32     321.1          75.6               12.0 +/-    0.39      12.3 +/-    0.39  0.090 / 0.160